#!/bin/bash
#
# Rsync everything except a few system directories and the backup directory
# itself. This is designed to be linked into the cron.daily directory
# to run automatically every night.
#
# Backup files being replaced to a unique new backup directory for this
# date.
#
# Log the output
#
exec > /var/log/backup.log 2>&1
#
set -x
#
# Make PATH safe
#
PATH="/bin:/usr/bin:/sbin:/usr/sbin"
cd /
export PATH
#
df
#
EX="/root/cronscripts/rsync-exclude"
#
# Make sure the backup directories exist and create new backup dir for this
# date for any files replaced in latest to be moved into (a separate job can
# remove old ones when we start to fill the backup disk).
#
if [ ! -d /backup/zooty ]
then
   mount LABEL=BACKUP /backup
fi
if [ ! -d /backup/zooty ]
then
   echo Cannot seem to mount the backup drive, quitting
   exit 2
fi
LATEST=/backup/zooty/latest
PREV=/backup/zooty/cb-`date -u +%Y-%m-%d-%H-%M-%S`
[ -d $PREV ] || mkdir -p $PREV
[ -d $LATEST ] || mkdir -p $LATEST
#
# Let's do the backup now, getting a list of exclusions from the
# rsync-exclude perl script which builds the list dynamically
#
$EX | /usr/bin/time rsync -v --exclude-from=- -a -S --no-D --delete --delete-excluded -b --backup-dir=$PREV / $LATEST
#
# My truecrypt secure image file doesn't get its timestamp changed by
# truecrypt. Back it up into the same tree structure as the previous rsync,
# but based on checksum not timestamp (so we really make a backup when
# it has changed).
#
/usr/bin/time rsync -v -a -c -S --no-D --delete -b --backup-dir=$PREV/zooty /zooty/secure.tc $LATEST/zooty/secure.tc
#
df
sync
umount /backup